Skip to main content

73 Magazine (Amateur Radio Today)

73 Magazine (also known as 73 Amateur Radio Today) (OCLC 22239204) was a United States-based amateur radio magazine that was published from 1960 to 2003. It was known for its strong emphasis on technical articles and for the lengthy editorials in each issue by its founder and publisher, Wayne Green. The magazine title, 73, means "best regards" in amateur radio lingo. Green, a former editor of CQ Amateur Radio magazine, published the first issue of 73 in October 1960.



rss RSS

516
RESULTS


Show sorted alphabetically

Show sorted alphabetically

SHOW DETAILS
up-solid down-solid
eye
Title
Date Published
Creator
73 Magazine (Amateur Radio Today)
texts

eye 12,765

favorite 9

comment 0

73 Magazine February 1973 (#149) PC-IC-ID - For FM- RTTY- /M- etc ...... K2OAW 27 The Evolution of Spectrum Management - Radio Club of America Talk ...... W4BW 31 Phased Lock Loop Decoder - For continuous tone systems ...... WB6BIH 36 Toroidal Quadreture Antenna - New wideband antenna ...... W4KAE 40 Active Filter Applications - RTTY ...... W1SNN 45 Frequency Measuring System -II - Design theory and clock ...... K5DUS 49 Repeater Keying Line Control - Squelch tail and time-out ...... WB6BIH 60...
Topics: frequency, output, circuit, mhz, input, power, transistor, voltage, repeater, meter, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 11,766

favorite 16

comment 0

73 Magazine April 1967 (#79) The Super Duper Super - It may not be a super, but it's sure super duper ...... WN1ECCH 6 A Toroidal VFO - An excellent VFO with many interesting mechanical features ...... W4BRS 10 Transceiver CW Filter and Monitor - Improve your transceiver's CW capability ...... WlDCG 14 Dreadful Ham Cliches - Special for April ...... K3SUK 16 The Converter Converter - Stick it between your UHF converter and your low-frequency receiver ...... W1OOP 18 The Ratnick Two'er - It's a...
Topics: khz, antenna, watts, power, ssb, circuit, ham, meter, receiver, amateur, power supply, watts pep,...
73 Magazine (Amateur Radio Today)
texts

eye 16,909

favorite 2

comment 0

73 Magazine September 1993 (#396) Computer Control for Beam Antennas, Part II - Give your station a smart, new twist ...... K4OND 10 The W2EKY "Icky-Stick" Antenna - Hit the roof with an improved ground-plane vertical ...... W2EKY 18 Compressing the W3EDP - Build this unique multiband restricted space antenna ...... G2BZQ 20 Distributed Capacity Twisted Loop - An indoor 40 meter antenna for five bucks ...... WA6QBU 26 Evolution of an Antenna - Build a new version of the classic...
Topics: radio, antenna, amateur, mhz, ham, repeater, frequency, amateur radio, radio today, ham radio,...
73 Magazine (Amateur Radio Today)
texts

eye 13,323

favorite 1

comment 0

73 Magazine August 1984 (#287) Top-Notch Tuner Time - Can't get your signal out of the backyard? Build KC2NT's antenna matcher and hear what you've been missing ...... K2NT 8 Cheap Power Ploy - This rugged supply will give you more power than you ever dreamed possible. Have we gone too far this time? ...... K9QLL 10 Penn's Two-Tone Gadget - Clue one: We're talking about lab quality. Clue two: Get your junk box ...... W1BG 21 Yaesu, Icom Graft Revealed - Splice Icom's headset to Yaesu's talkie...
Topics: amateur, output, radio, ihe, mhz, frequency, antenna, tor, ttie, amateur radio, power supply, radio...
73 Magazine (Amateur Radio Today)
texts

eye 18,333

favorite 13

comment 0

73 Magazine December 1973 (#159) IC Code Speed Display - Check the FCC's code machine with this one ...... VE1BU 25 2 Meter Linear Amplifier - In case you want to try Moonbounce ...... W4KAE 29 A Simple IC Keyer - Nice 3 IC Keyer ...... K2BLA 37 Precision Waveform Generator - Sine, square and sawtooth waves from one IC ...... VE3GSP 41 Helical Resonators - Rise from the depths of QRM ...... W0PSF/2 49 Sensitive RF Voltmeter - Check out your rig's emotional problems ...... WA6NIL 53 The Greenie...
Topics: frequency, amateur, mhz, voltage, output, meter, repeater, power, circuit, receiver, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 8,583

favorite 1

comment 0

73 Magazine September 1991 (#372) The Square Pancake Antenna - A 20-inch square marvel! ...... W2SMR 18 Indoor 10 Meter Beam - A 2-element "invisible" coaxial antenna ...... N9CAP Economical Mobile HF Antenna - Modify a Radio Shack CB antenna for the HF bands ...... AA6NG 26 DXDA Awards and Countries - The latest update, thanks to Bob Reed WB2DIN ...... Staff 30 Dual-Band Vertical - This one's for the 160 and 1750 meter bands ...... WD4PLI 38 The L-O-N-G Long-Wire - What is it like to...
Topics: antenna, radio, amateur, ham, island, amateur radio, meter, mhz, ham radio, radio today, feedback...
73 Magazine (Amateur Radio Today)
texts

eye 13,867

favorite 4

comment 0

73 Magazine February 1982 (#257) The Fun-Oscillator - a simple, goof-proof vfo for your QRP transmitter ...... WA0RBR 12 Build this Antennalyzer - you'll need a weekend ...... W1BG 16 Police Freqs for the TR-2400 - a sleepless night for the mod squad ...... N9AKX 26 Those Amazing Bobtails - the current-fed connection ...... W1XU 30 Shoot the Moon! - visual tracking for your EME array ...... W9CGI 34 CQ MARS de IC-2A - work new worlds ...... WD8JLW 46 The Father of FM - the tragic story of Major...
Topics: antenna, mhz, frequency, amateur, radio, signal, receiver, ham, magazine, amateur radio, toll free,...
73 Magazine (Amateur Radio Today)
texts

eye 12,820

favorite 4

comment 0

73 Magazine September 1990 (#360) Quick and Easy Field-Strength Meter - Home-brewing can be simple! ...... KM4KT 9 75 Meter 1/4-Wave Sloper Array - Confessions of a contester ...... WA3EKL 18 Alinco Service Survey - Alinco may be the best show in town ...... WB6NOA 20 Dummy loads for DC Supplies - Don't risk your rig! ...... VE1GM 22 Mobile Power Source Organizer - Easy 12 volt hookups for your mobile gear ...... AH2AR/8 24 End-Fed Copper Dipole - Why buy when you can build? ...... N8KDD 26...
Topics: radio, amateur, antenna, mhz, frequency, ham, power, amateur radio, feedback card, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 12,886

favorite 1

comment 0

73 Magazine April 1979 (#223) A Speedy Spinner Mod - 5,000,000 Hz per minute ...... W2RZJ 40 A Variable Bandpass Active Filter - extremely simple design ...... W3KBM 42 What About an Active Antenna? - here's a look at one ...... W5JJ 44 Help for the Hearing-Impaired - don't miss another phone call ...... W4VRV 56 Try a Bi-Loop Antenna - gets you coming and going ...... W7CJB 58 Simple RTTY IDer - uses five ICs ...... G3MEJ 60 Tales of Speech Processing - including a practical design .........
Topics: amateur, mhz, antenna, radio, power, frequency, kit, arrl, tion, amateur radio, power supply, toll...
73 Magazine (Amateur Radio Today)
texts

eye 13,531

favorite 1

comment 0

73 Magazine November 1982 (#266) A Perfect "10" - Timer, counter, logic probe - 10 functions in all. That's the Multi-Board One and you can build it ...... WA2BHB 10 Remote Control Your IC-701 - Simpler than commercial controllers, this home-brew circuit nevertheless features push-button band changing and frequency selection scanning, and expanded coverage ...... N2GW 14 Automatic Beam Aimer - Here is the scoop on adding set-and-forget convenience to your rotator control. Works with...
Topics: antenna, output, circuit, mhz, voltage, audio, frequency, magazine, power, power supply, amateur...
73 Magazine (Amateur Radio Today)
texts

eye 15,905

favorite 6

comment 0

73 Magazine December 1977 (#207) Inside Ten-Tec - QRP innovators ...... K4MDK 34 The History of Ham Radio - part V ...... W9CI 38 Try BCB DX! - when you're tired of twenty ...... WB2BJH 42 Build An Engine Analyzer - use your scope! ...... WA6THG/KH6 46 More Repeater Control Devices - control unit/audio interface ...... W7JSW 50 How Do You Use ICs? - part VIII ...... WA2SUT/NNN0ZVB 56 Finally! A Practical Discriminator! - metering system, that is ...... K4GOK 62 A Kilowatt Alternative - try a...
Topics: mhz, frequency, amateur, kit, circuit, power, radio, output, antenna, meter, power supply, amateur...
73 Magazine (Amateur Radio Today)
texts

eye 12,831

favorite 1

comment 0

73 Magazine May 1979 (#224) CB to 10 - part XVIII: several PLL rigs ...... K9PS 30 PROM IDer for Longer Callsigns - don't be caught short ...... W4VGZ 34 The W7GAQ Key Collection - 250 museum masterpieces ...... K7NZA 38 Proper FM Transceiver Adjustment - good club project ...... VE3AVY 44 Dual-Band Smokey Detector - Super Scooper does it all ...... W1SNN 48 The DXer's Secret Weapon - costs you nothing ...... W6BKY 64 Foiling The Mad Kerchunker - frustrate him with this circuit .........
Topics: mhz, amateur, radio, kit, frequency, antenna, repeater, power, model, amateur radio, radio club,...
73 Magazine (Amateur Radio Today)
texts

eye 16,088

favorite 2

comment 0

73 Magazine April 1984 (#283) Doing It At Dayton - This unofficial Hamvention handbook helps attendees and dreamers alike ...... WA4BPI 10 Me and My Stupid Old PMOS Converter - At last, there's an easy way to get -12V from a +5-V power supply. Who said "trial and error"? ...... WB1HKU/6 14 Watch That Signal! -Haul out your old oscilloscope and turn it into a signal monitor. The conversion is easy and the price is right ...... W4RNL 20 Digital Design: How to Interface ICs - Connect ICs...
Topics: radio, filter, amateur, frequency, antenna, mhz, output, ham, magazine, radio shack, amateur radio,...
73 Magazine (Amateur Radio Today)
texts

eye 13,406

favorite 2

comment 0

73 Magazine August 1976 (#190) How Do You Use ICs? - fundamentals ...... WA2SUT/NNN0ZVB 24 Surprising Miniature Low Band Antenna - the DDRR low noise antenna (part I) ...... Boyer 28 MINI-MOS - The Best Keyer Yet? - nothing Mickey Mouse about this one ...... WA6EGY 38 The Skinflint's Delight Breadboard - cheap imitation of a commercial IC DIP board ...... K7YGP/7 52 More PLL Magic - like low frequencies for RTTY ...... W9ZTK 56 The Logic Grabber - selected interval logic tracer (S.I.L.T.)...
Topics: output, kit, input, logic, antenna, frequency, circuit, amateur, radio, mhz, nand gate, amateur...
73 Magazine (Amateur Radio Today)
texts

eye 7,537

favorite 1

comment 0

73 Magazine February 1993 (#389) Fun at 10,000 MHz - Explore the wide open spaces of the 10 GHz microwave band ...... WB6NOA 10 The 23-Foot Indoor Antenna - Make an effective 20 and 80 meter apartment-owner antenna ...... G2BZQ 16 Accurate Low Cost VSWR Meter - Convert this CB accessory for 1.8-450 MHz operation ...... AD5X 18 An Effective 160 Meter Antenna - How to build one on a small residential lot ...... KA6MMQ 20 The "Simplest Transverter" - Check out the 6 meter band with this...
Topics: radio, antenna, amateur, mhz, frequency, ham, meter, ghz, output, amateur radio, radio today, ham...
73 Magazine (Amateur Radio Today)
texts

eye 7,642

favorite 1

comment 0

73 Magazine May 1992 (#380) Poor Ham's Dynamic Component Analyzer - Build your own Circuit detective ...... KA1MDA 8 Log Periodic Dipole Array for 2 Meters - Wideband performance in a small package ...... N2KLK 14 QRP Sidetone Companion - And part-time code practice oscillator ...... KI5AZ 18 The Copperback Beetle - A new type of "bug" ...... KI5AZ 20 Battery Watchdog - Keeps your battery up to snuff ...... WB0TCZ/7 26 Control Your Station by Computer - Hardware and software...
Topics: radio, amateur, antenna, mhz, frequency, repeater, call, khz, ham, amateur radio, call call, radio...
73 Magazine (Amateur Radio Today)
texts

eye 11,985

favorite 0

comment 0

73 Magazine December 1978 (#219) A DXer's Dream Vacation - try sunny Montserrat ...... WB6JPZ 30 Close Encounters - the eyes of Texans are upon them ...... K8NQN 36 The Schizophrenic Triangle - a split-personality radiator ...... WA4JTJ 44 From CW to Computers - a digital modulation primer ...... N6RY 48 A 28 Cent Touchtone Mod - something for (almost) nothing ...... W9CGI 56 Space Age Surplus - your own Saturn V? ...... Endress, Endress 60 An X-Band Transceiver - more 10-GHz fun ...... W1SNN...
Topics: antenna, mhz, amateur, frequency, output, meter, radio, swr, circuit, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 13,057

favorite 0

comment 0

73 Magazine July 1979 (#226) A Visit to Antenna Specialists - Wayne tours the test range ...... W2NSD/1 30 Secrets of Guyed Towers - put 'em up and keep 'em there ...... WB3BQO 34 Death-Defying PL Mod for the KDK 2015 - not for the squeamish ...... W8GQL 40 Feed-Horn Mounting Made Easy - solution to a pesky problem ...... WB8DQT 44 Antenna Tuning Joy Revisited - remember the Tektronix 190B? ...... W9CGI 48 Modern Solid-State Equipment Design: A Better Way - sorry, tube fans ...... W4RNL 52...
Topics: antenna, khz, mhz, amateur, meter, frequency, tower, radio, tion, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 11,580

favorite 0

comment 0

73 Magazine June 1984 (#285) Easy Berardi Building - You can count on this simple frequency counter from Arizona ...... Berardi 10 Don't Grope in the Dark! - Let a simple card-file box be the brains of your own emergency lighting system ...... W7RXV 16 Flying High with Two - Here's how a hand-held makes for some ultralight Michigan madness ...... WB8DQT 20 Creason's Do-It DVM - The more Sam builds, the more smart people pay attention ...... K6EW 26 Meeting Ends Make - These ten tips will better...
Topics: amateur, antenna, radio, mhz, ham, ttie, tor, magazine, tion, amateur radio, radio club, power...
73 Magazine (Amateur Radio Today)
texts

eye 7,953

favorite 0

comment 0

73 Magazine August 1991 (#371) Poor Man's Packet - A complete software TNC for PC compatibles! ...... WB2EMS, N8KEI 8 Low Cost Discone - Wideband coverage from 144 to 1296 MHz ...... AD5X 24 High Speed Data Acquisition - Sample the outside world with this inexpensive interface ...... N8KDD 28 Software for the Ham Shack, Part IV - Useful ham calculations you can program yourself! ...... WA4BLC 32 Universal CAT Interface - Control your rig with your computer! ...... K5YEF 38 Hope for Monolingual...
Topics: radio, amateur, ham, mhz, antenna, program, packet, frequency, amateur radio, radio today, ham...
73 Magazine (Amateur Radio Today)
texts

eye 8,864

favorite 0

comment 0

73 Magazine September 1981 (#252) 10,000 Contacts from Easter Island - four Minnesotans make a dream come true ...... K4ESQ 12 A Very "Special" Weekend - hams help New York's Special Olympics run smoothly ...... WB2CMB 22 Getting Ready for the Real Thing - emergency preparedness that works ...... WA3REY 26 Review: The FRG-7700 General-Coverage Receiver - a first-rate rig for the shortwave bands ...... KA1LR 30 Two Meters Getting A Little Boring? - maybe you need to try crossband DXing...
Topics: radio, amateur, mhz, antenna, ham, magazine, frequency, code, hams, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 10,453

favorite 1

comment 0

73 Magazine January 1979 (#220) The Italian Freq Generator - from Bologna to you ...... K7YZZ 24 Happiness is a WE-800 - proud owner loves his Wilson ...... K3JML 28 Explore the World of VLF - with this simple converter ...... W3QVZ 32 The S.H.A.F.T. - special tuning gadget for sightless hams ...... K5CW 34 A Remotely-Tuned Matchbox - ultimate operating ease ...... W4PSJ 38 Diodes of the Dead - eavesdrop on the great beyond ...... K5JRN 44 Building an Economy Receiver - junk box, here I come!...
Topics: mhz, frequency, antenna, output, amateur, radio, electronics, meter, circuit, amateur radio, power...
73 Magazine (Amateur Radio Today)
texts

eye 16,643

favorite 1

comment 0

73 Magazine December 1982 (#267) The Hangman's 2-Meter Collinear - Make your tower do double duty. Drop this array from the top and get 6-dB gain ...... W1GV/4 10 Deep-Six Squelch Tails - Kerchunks take a dive with the addition of this audio delay ...... WA2NYE 14 Build Yourself A Paralyzed Beam - Go from east to west In less than a second with this 2-meter array. And put your rotator out to pasture ...... WB2WIK 24 Taming the 2-Meter Linear - It lives In the forest of spurious oscillations and...
Topics: antenna, mhz, frequency, amateur, power, radio, audio, receiver, rtty, magazine, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 14,416

favorite 0

comment 1

73 Magazine July 1981 (#250) Dayton Dilemma '81 - which new gear do you buy? ...... KA1LR 22 The Fun-Ceiver - easy-to-build companion to February's QRP Fun-Mitter ...... WA0RBR 32 Review: The Kenwood TS-130s - a good rig done better ...... KA1LR 38 Review: The NCG-15 SSB/CW Monoband Transceiver - moving tale of mobile hamming ...... KA1LR 42 The Incredible Shrinking Antenna - give your vertical a top hat ...... W1GV/4 44 Review: The Micro Control Specialties Mark 3CR - a hassle-free repeater...
favoritefavoritefavoritefavoritefavorite ( 1 reviews )
Topics: radio, antenna, amateur, mhz, frequency, magazine, power, receiver, meter, amateur radio, power...
73 Magazine (Amateur Radio Today)
texts

eye 12,492

favorite 3

comment 0

73 Magazine November 1972 (#146) The Traveling Ham ...... G3ZCZ/W3 5 Solid State Power ...... W6EI 15 TTL SELCAL for RTTY ...... W9ZTK 20 An IC TRF Receiver ...... W6DNS 29 The Mark II Electronic Keyer ...... W6JJI Emergency Power for home QTH ...... WA8OIK 37 High Power Mobile ...... W9NTP 42 220 MHZ Front End Using FETS ...... K1CLL 45 Double Delta Antenna ...... W2EEY 52 FMP Review ...... Staff 57 A Simple Converter for Beginners ...... WA8OIK 59 The Third Hand... Tester ...... WB4MYL 65...
Topics: mhz, output, frequency, amateur, antenna, repeater, power, meter, circuit, input, amateur radio,...
73 Magazine (Amateur Radio Today)
texts

eye 7,838

favorite 2

comment 0

73 Magazine October 1990 (#361) Dual Voltage Bench Supply - Versatile solution for your power supply needs ...... W6WTU 10 The SPC Transmatch - Improved performance for 20 through 10 meters ...... W4RNL 22 ROBO-COPY - Automate your shack with a CW copier ...... WB9DYI 28 An Easy to Make 2 Meter Antenna - Make a strong J-Pole from an old TV antenna ...... AA5KB 32 Solar Car Race - Searching for an alternative ...... WB8ELK 34 Service Survey Wrap-Up - Plus -where to get your old rig fixed .........
Topics: radio, amateur, antenna, mhz, ham, qsl, frequency, ihe, amateur radio, feedback card, ham radio,...
73 Magazine (Amateur Radio Today)
texts

eye 11,601

favorite 2

comment 0

73 Magazine June 1980 (#237) One Step at a Time: Designing Your Own Ham Gear - part I ...... W4RNL 28 Down with Interpolation - a digital display for the Triton and others ...... W4FQ 36 Hooray! An AFSk Auto IDer! - a clean and and legal ending for RTTY transmissions ...... K3IJ 42 Let's QSY to .52 - ah, technology ...... WB2RVA 44 Five Test Equipment Bargains from Heath - the 5280 series features plenty of measuring power per dollar ...... W2QFC 46 The Phoenix Fix - an alarming...
Topics: mhz, frequency, antenna, amateur, receiver, radio, kit, power, magazine, amateur radio, power...
73 Magazine (Amateur Radio Today)
texts

eye 12,609

favorite 2

comment 0

73 Magazine September 1979 (#228) Power Line DXCC (Distant Control Circuit) - the ac lines are a already there... why not use 'em for remote control? ...... W9CGI 34 Blueprint for Biofeedback Experimentation - fertile ground for pioneers ...... WD5BNL 42 The History of Ham Radio - part X ...... W9CI 44 Maximum Security for the 22S - remote control puts your Icom in the trunk ...... K8KW 48 The Big Blinker - a visual signal for the deaf ...... AD5X 50 Morse Converter for DMMs - super gadget for...
Topics: antenna, amateur, mhz, output, radio, power, frequency, ham, kit, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 13,129

favorite 0

comment 0

73 Magazine June 1981 (#249) Repeater at 102,000 Feet! - Canadian hams go up, up, and away ...... VE4FK 12 Digital Control for the Ham III Rotor - good-bye manual switching!...... WA0PBQ 18 Review: The Doppler Systems DDF-3003 - a review of the latest in direction-finding equipment from Doppler Systems ...... KA1LR 28 DF Breakthrough! - the "turkey" tracker we've all been waiting for ...... W7BEP 32 The History of Ham Radio - part XV ...... W9CI 48 Review: The VoCom Two-Meter Monkey -...
Topics: amateur, radio, antenna, mhz, frequency, power, magazine, fcc, ham, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 8,303

favorite 2

comment 0

73 Magazine May 1985 (#296) Discover the Discone - Is this the perfect aerial? Consider simple wire constrcution, easy one-time tuning, and flat swr from 3.5 to 28 MHz ...... W1GV/4 17 Two for Two - We respectfully offer a pair of radiators for the two-meter band so elegant, yet so simple, that you will kick yourself for not thinking of them first ...... WA4BLC 22 The Snake with LED Eyes - A tall tale from the Antlers- wherethe decoration is strange and the stories are even stranger .........
Topics: antenna, radio, amateur, amateurs, tor, swr, mhz, hams, antennas, radio amateurs, amateur radio,...
73 Magazine (Amateur Radio Today)
texts

eye 19,725

favorite 4

comment 0

73 Magazine December 1981 (#255) Cold Comfort - an HT to the rescue at fifteen below ...... KA1D 12 Review: The Rex Bassett TLM-2 Mobile Mount - banish your fear of flying ...... KAlLR 18 Update Your CW Music Keyboard - play it again Sam ...... K5KL 20 Review: The Kenwood TR-7730 Transceiver - Let's get small ...... KA1LR 26 Joe Ham: The Consumer - do you fit the mold? ...... N6AVU 32 Bob Cooper: Profile of a Pioneer ...... N8RK 38 Satellite Channel Guide - part III ...... WESTSAT 44 Satellite...
Topics: antenna, mhz, amateur, frequency, radio, power, magazine, signal, satellite, amateur radio, power...
73 Magazine (Amateur Radio Today)
texts

eye 9,949

favorite 0

comment 0

73 Magazine January 1991 (#364) High Precision Frequency Standard - Use your TV set as a laboratory standard ...... Johnson 9 Scrounger's Guide to Recycled Electronics - Discover a gold mine of inexpensive parts ...... W5FG 22 An HF/VHF/UHF Marker Generator - Get on frequency for less than $10 ...... K84ZGC 27 A Parallel Port I/O Board - Control your world! ...... VE6BGL 29 The Three-Terminal Regulator - Multiple uses in one package ...... N9RF 40 Rose Parade Mobile - A high-tech HF remote...
Topics: radio, amateur, antenna, mhz, frequency, ham, output, tor, amateur radio, radio today, ham radio,...
73 Magazine (Amateur Radio Today)
texts

eye 8,435

favorite 1

comment 0

73 Magazine April 1983 (#271) Pedal Power: A Perfect Field-Day Generator - This bicycle-driven power source is easy to build and guaranteed to get you in shape. No heavy breathing into the mike, please ...... KN6H 12 No-Crash Autopatch - Dialing and driving don't mix. Build this autodialer and let its fingers do the walking-not yours ...... W3ZC 20 Turn Mobile-Rig Whine into a Whimper - From brute-force filtering to solid-state regulation, K4AJQ has the answers to mobile noise ...... K4AJQ 30...
Topics: amateur, radio, mhz, antenna, ihe, tor, power, magazine, ham, kit, amateur radio, toll free, power...
73 Magazine (Amateur Radio Today)
texts

eye 11,835

favorite 0

comment 0

73 Magazine June 1979 (#225) Add Digital Display for $50 - 100-Hz accuracy ...... K4IQJ 28 High-Performance Receiver Add-Ons - aren't ICs wonderful? ...... W5DA 32 A Solution to the Home-Brew Housing Shortage - building a box for your next project ...... W0IHI 38 How Do You Use ICs? - part XI ...... WA2SUT/NNN0ZVB 42 Customize Your HT144B - some nifty mods ...... W2KGV 46 Ultra-Simple CMOS Logic Probe - a single IC does it all ...... WB9PHM 50 "The Voice of Wolf Creek" - the KGCX...
Topics: amateur, radio, mhz, power, frequency, antenna, circuit, electronics, kit, amateur radio, power...
73 Magazine (Amateur Radio Today)
texts

eye 7,117

favorite 0

comment 0

73 Magazine October 1993 (#397) More Gadgets for Your MFJ-9020 - Add features to this great QRP rig ...... W6YBT 10 Universal Automatic Minimum Power Control for AMTOR - Use just enough punch to get the job done ...... N7APE 14 The Challenge of QRP - An introduction to low power operation ...... WB8VGE 18 The RASER Revisited - How this superior HF dipole antenna can be improved ...... W2OZH 29 A New Look at a Simple VFO/Exciter - Stable tuning with minimal parts ...... W2IMB 35 73's DX Dynasty...
Topics: amateur, radio, qrp, antenna, ham, mhz, ihe, power, repeater, amateur radio, radio today, ham...
73 Magazine (Amateur Radio Today)
texts

eye 9,033

favorite 1

comment 0

73 Magazine December 1989 (#351) VOX for HTs - No-hands hand-held hamming ...... KA8HML 9 Two Meter Mobile Rig - Sick of anemic HT mobile operation? Pep up your handie with this booster ...... N8KDD 22 Poor Boy Satellite Station - Coat hanger + SO-239 connector = Mode A uplink antenna! ...... N5LKJ 24 Color SSTV for the Atari ST, Part I -Fast and easy way to get on this fascinating mode ...... WB2OSZ 38 Yaesu FT-470 2m/70cm HT - Two meters and 70cm in a micro-sized hand-held ...... KB1UM 18...
Topics: amateur, radio, antenna, ham, mhz, repeater, frequency, yaesu, band, amateur radio, feedback card,...
73 Magazine (Amateur Radio Today)
texts

eye 7,476

favorite 1

comment 0

73 Magazine February 1995 (#413) Dual Bi-Square Loop for HF - Try this easy, low-cost approach on 20 and 2 meters ...... K5DKZ 18 Reading Morse Code on Your PC - Decipher Morse code right off the air, or improve your own fist ...... W6PRO 22 Cheap Dual-Band Yagi - A fine VHF/UHF beam made from old TV antennas ...... KA0NAN 46 Grounding and Lightning Protection, Part 1 - Protect your shack and yourself from lightning ...... W5UOJ 52 The Yaesu FT-900AT HF Transceiver - Base station performance...
Topics: radio, antenna, amateur, mhz, frequency, ham, meter, antennas, power, amateur radio, radio today,...
73 Magazine (Amateur Radio Today)
texts

eye 8,855

favorite 2

comment 0

73 Magazine September 1989 (#348) Vertical Antennas at HF: Part I - The inside story on vertical antennas ...... W1GV 38 Build a 30 Meter Trap - Modify your Cushcraft AV-4 or AV-5 for this WARC band ...... KE0UV 11 Unique 12 and 17 Meter Dual-Band Beam - Build this for an 8 dBd signal! ...... W6YUY 20 Kaboom Micro Keyer - For safe mobile CW operation ...... KB1UM 28 3/4 Inverted "U" for 160m - Big signal on the Top Band ...... WA3EKL 32 The Hamfester - "Crowdbuster" for your...
Topics: antenna, radio, amateur, mhz, frequency, meter, antennas, ham, power, amateur radio, feedback card,...
73 Magazine (Amateur Radio Today)
texts

eye 7,674

favorite 0

comment 0

73 Magazine February 2003 (#507) Cheap & Easy Portable HF Vertical - Try this medium-weight, sturdy, neat, visually pleasing, fun to use ...... K8MKB 10 Troubleshooting Computer Power Supplies - Rule # 1: Be careful ...... W6WTU 14 Build This Simple SMT Station - Dinner and a movie? How about pizza and a project? ...... AA2JZ 23 How's That Thing Really Work, Anyway? - Part 1: Receivers ...... AA2JZ 25 Warblemania - and other QRP afflictions ...... NY9D 27 Breakdown in Cape Town - The...
Topics: radio, amateur, antenna, power, mhz, voltage, frequency, laser, amateur radio, radio today, power...
73 Magazine (Amateur Radio Today)
texts

eye 9,563

favorite 0

comment 0

73 Magazine January 1981 (#244) Emergency Tone Alert System ...... WB5UVC, WB5ASA, WB5PRD 42 WWV-to-80 Meter Converter ...... N7BH 48 Cheap and Simple - your basic 13.8-V, 25-A power supply ...... WA9VLK 50 Direct Printing FAX - part III; testing and operation ...... WB8DQT 54 Unplug It, Dummy! - safety for the traveling ham ...... WB9SKX 58 Power Plus for the Omni - Improving on Ten-Tec's power supply ...... WA4IQQ 60 Oddball Offsets for the KDK-2015R - make a good rig better ...... WB6MYF The...
Topics: mhz, power, antenna, frequency, amateur, radio, magazine, circuit, output, power supply, amateur...
73 Magazine (Amateur Radio Today)
texts

eye 9,380

favorite 0

comment 0

73 Magazine November 1978 (#218) Electro Sculpture - be a radio Rodin ...... VP2DN 32 The SUMSUE Method - determining code speeds ...accurately ...... K1RH 36 The UART Gear Shifter - for multi-speed RTTY ...... KB8CE 38 Silence Groaning Refrigerators - check your house wiring ...... K4KI 42 Bargain Preamp - muliple uses for this one ...... W5REZ 44 Murphy's Masterpiece - the lost weekend ...... WA6PPZ 48 How About Some Holm Shack Safety? - don't be a statistic ...... W7FGD 52 Head 'Em Off at...
Topics: mhz, frequency, output, amateur, power, circuit, meter, receiver, khz, antenna, amateur radio,...
73 Magazine (Amateur Radio Today)
texts

eye 6,568

favorite 1

comment 0

73 Magazine August 1985 (#299) The Downunda Project: Part I - Stone the crows! This fair dinkum 2m transceiver from Australia really scores a six! ...... Simpson 14 Harmonic-Free QRP? - Avoid an FCC pink slip by measuring second-harmonic power with the ZS6UP reactance load ...... ZS6UP 29 World War Wireless - What can you do with a pencil, a razor blade, a paper clip, and a hank of wire? Why, build a radio, of course! ...... W1BG 32 Instant ATV! - W8CHK breaks through the mystique surrounding...
Topics: radio, amateurs, amateur, mhz, antenna, tor, frequency, output, power, radio amateurs, amateur...
73 Magazine (Amateur Radio Today)
texts

eye 8,651

favorite 0

comment 0

73 Magazine October 1991 (#373) The Sudden Receiver - A simple-to-build receiver for 160-20M ...... G3RJV 8 A 10M Sideband Transmitter - Add voice to your QRP station ...... NZ5G 14 Simple Gain Antenna for 903 MHz - Build it for under $25 ...... AD5X 27 Microprocessor Repeater Controller, Part I - Add versatility to your repeater system ...... WB3ESS 28 Low-Pass Antenna Tuner - Match your antenna while reducing harmonics with this unique design ...... KB4ZGC 46 Kenwood's TH-77A Dual-Band Walkie...
Topics: radio, amateur, mhz, antenna, repeater, frequency, ham, amateur radio, radio today, ham radio,...
73 Magazine (Amateur Radio Today)
texts

eye 13,800

favorite 4

comment 0

73 Magazine August 1977 (#203) Dual Rhombic for VHF-UHF ...... W8DMR 24 Microwave Waveguide Details ...... Moak 28 Centerfed Specials ...... K4MDK 30 Recycle Your Receiver ...... W9VZR 32 Build a Double Bazooka ...... K4KI 36 Dirt Cheap Directional Array ...... WA4BKO 40 Instant PS Regulation ...... W3MR 41 Take Cover! ...... WB5ASA 44 Introducing the Intenna ...... Norman 46 The Zeppy Vertical ...... K5GP 47 A Cure for Antenna Self-Destruct ...... W9TKR 48 Quick Ante nna Insulators .........
Topics: antenna, mhz, kit, power, meter, frequency, model, amateur, circuit, wire, power supply, amateur...
73 Magazine (Amateur Radio Today)
texts

eye 7,126

favorite 0

comment 0

Topics: antenna, radio, amateur, ihe, signal, frequency, voltage, mhz, arc, amateur radio, radio today, ham...
73 Magazine (Amateur Radio Today)
texts

eye 13,942

favorite 2

comment 0

73 Magazine December 1991 (#375) The Simple TX TX - The perfect companion for the SupeRX receiver! ...... WA6IVC 10 Project INSPIRE: A Space Shuttle Experiment - Build a simple receiver to explore the wonders of the 60,000 meter band! ...... KG6EK 22 The QUAG-V - A high performance and wide bandwidth antenna for VHF and UHF ...... WB3AYW 36 Computerized Tuning for Ramsey Receiver Kits - It doesn't have to be expensive ...... N8KDD 42 Not Just Another Island - Weekend DXpedition activates the...
Topics: amateur, radio, mhz, antenna, frequency, ham, repeater, receiver, amateur radio, radio today, power...
73 Magazine (Amateur Radio Today)
texts

eye 6,481

favorite 1

comment 0

73 Magazine March 1992 (#378) Build a GaAsFET Preamp Sequencer - Mast-mount your preamp for maximum performance ...... WZ1V 8 Simple Pulsed Crystal Signal Source - Find the right frequency ...... KA1MJP 14 An ATV Downconverter with a Difference - Keep FM voice repeaters out of your picture ...... W9NTP 22 Using RS-12 - Work the world with this unique satellite ...... G3IOR 32 40/80 Meter Wave Ryder - A QRP tube transmitter powered by 12 volts DC ...... KI5AZ 40 A Remote Field Strength Meter -...
Topics: mhz, radio, amateur, antenna, frequency, signal, power, ham, amateur radio, radio today, feedback...
73 Magazine (Amateur Radio Today)
texts

eye 8,908

favorite 2

comment 0

73 Magazine June 1966 (#69) The Micro-Ultimatic - 73 scoop: integrated circuits in a high-performance keyer ...... W1CFW 6 A Transistorized Scope - Another ham scoop: use transistors for deflection amplifiers ...... K8ERV 14 50 Watts on 50 MHz for $50 - This project should prove popular ...... K1CLL 18 Two Meter Transistor Converter - Cheap, simple and works well ...... W6AJF 24 220 MHz Transistor Converter - Grounded emitter or grounded base, too ...... W6AJF 30 432 MHz Transistor Converter -...
Topics: tlie, meter, receiver, frequency, power, antenna, output, crystal, volts, volt, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 6,863

favorite 0

comment 0

73 Magazine February 1989 (#341) Getting High On Packet - World-wide packet? Here's how on HF ...... WB6RQN 50 One-Stage 80-Meter CW Transceiver - Enjoy the thrill of rolllng your own rig ...... WB3ELL 28 TCM 3105 Modem For The Digicom > 64 - Plug in to 1200 baud packet ...... N4PLK, KJ4GP, W4KUM, WD4PVS 42 Simple CW IDer - Useful for repeater ID and unattended fox ...... WN0EHE 54 Kenwood TS-940S - First-class full-featured HF rig ...... WB6RQN 12 lCOM IC-781 - Scope out this DX dream...
Topics: radio, antenna, amateur, mhz, frequency, meter, ham, audio, amateur radio, feedback card, radio...
73 Magazine (Amateur Radio Today)
texts

eye 17,443

favorite 3

comment 0

73 Magazine June 1982 (#261) Build This Digital Vfo - a microprocessor makes it simple ...... WA5VQK 12 Surviving the Unthinkable - part II : some practical ideas ...... AK0Q 30 A Split Personality for the KDK FM2015R ...... K0BV 40 Building for Beginners - happiness is a hot soldering iron ...... N1II 42 Coping with PC Boards - it's not easy to be virtuous ...... KC7M 48 'Lite Receiver IV - the second half ...... WA4CVP, WA4OSR 52 TVRO Transducer - waveguide-to-coax transition ...... WA4CVP,...
Topics: mhz, amateur, radio, antenna, frequency, kit, magazine, receiver, ham, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 9,441

favorite 3

comment 0

73 Magazine September 2003 (#514) (Final Issue) Just Hang'er Up - Clear out your closets with this fun WARC tri-band dipole ...... W4DAN 10 Portable Pulse Generator - Build this pocket-size test instrument that's useful in a wide variety of lab and service tasks ...... Sellen 13 Be a Caribbean HEARO - How about a little mini-DX from the USVI?... W9CGl 18 73 Repaired My TV - Thanks, guys! ...... W6MIK 22 The Ins and Outs of Parts Substitution - Part 2: Specific devices ...... W6WTU 26 Simple...
Topics: radio, amateur, digital, tuner, ham, circuit, antenna, september, output, amateur radio, radio...
73 Magazine (Amateur Radio Today)
texts

eye 8,684

favorite 2

comment 0

73 Magazine May 1981 (#248) Two-Meter Antennas: Facts and Fables - the truth about omnidirectional antennas on two ...... W1IS 12 The 440-MHz Curtain - hang this broadbanded two-bay collinear on your tower and get 22 dBi to play with ...... WA9OZC 22 The Plumber's Parabolic Mount - a first-class hydraulic system ...... WD4MRJ, KA4JYD 28 The History of Ham Radio - part XIV ...... W9CI 36 The Skeptic's Multiband Ground Plane - This antenna flies in the face of accepted theory. Do you think it...
Topics: antenna, amateur, radio, mhz, frequency, magazine, antennas, tion, ham, amateur radio, radio club,...
73 Magazine (Amateur Radio Today)
texts

eye 15,006

favorite 0

comment 0

73 Magazine January 1994 (#400) Using the World's Most Accurate Frequency Standard, Part 1 - Building a receiver for WWVB ...... K9EUI 10 Micro IDer - An easy-to-build automatic Morse code station identifier ...... KA9SZW, Pointer 18 The "Hula Loop" - A stationary bidirectional hybrid three-element delta loop ...... NH6XK 30 The Quad Charger - A constant current NiCd charger ...... K4GOK 34 EASY-PC Printed Circuit Layout Software - Want to get into computer-aided design (CAD)? .........
Topics: radio, amateur, antenna, mhz, repeater, ham, power, frequency, amateur radio, radio today, power...
73 Magazine (Amateur Radio Today)
texts

eye 9,268

favorite 1

comment 0

73 Magazine October 1995 (#421) The QRP Delight - A full-featured antenna tuner with built-in SWR meter ...... AD5X 10 DDS Dream VFO - Yes, you can build your own synthesizer! ...... KD1JV 14 Portable Solar Electric Power Generator - The sun is free for the using ...... K4SYU 20 Armstrong Updated - A high-performance, regenerative short-wave receiver ...... KC3ZQ 26 Link it All! - Why settle for operation on just two bands? ...... WB9YBM 32 Boring Beacons! - Making additional use of beacon...
Topics: radio, amateur, ham, mhz, frequency, antenna, repeater, receiver, hams, amateur radio, radio today,...
73 Magazine (Amateur Radio Today)
texts

eye 12,462

favorite 4

comment 0

73 Magazine January 1993 (#388) The Techno-Whizzy 1, Part II - Build a direct digital synthesis (DDS) transmitter ...... N9JZW 10 Programmable-Frequency Audio Generator - High accuracy with digital control ...... Redman 16 The SP-1 Transceiver - Build the HF "Spider" ...... WA8TXT 24 Twin Crystal Ladder Filters - Upper or lower sideband filters using inexpensive crystals ...... N2DCH 32 Handi-Beacon - Turn your tape recorder into a beacon controller ...... WB9YBM 38 The Down East...
Topics: radio, amateur, mhz, antenna, output, power, frequency, repeater, digital, amateur radio, radio...
73 Magazine (Amateur Radio Today)
texts

eye 7,022

favorite 0

comment 0

73 Magazine August 1995 (#419) Tube TNC - A packet breakthrough! ...... W0XI 10 VE7PMR Solar-Powered Packet Node - Is packet worth nearly freezing on a mountain? Sure! ...... VE7VMS 12 19,200-Baud Packet - A simple way to do it ...... WB9JTK 16 RF Speech Processing - How to get an extra 6 to 9 dB of talk power on SSB ...... VK3CA 24 Working the Final Frontier - Ideas for a fun and easy ham space program ...... N2CQR/H18 26 Single-Ghip Identifier - A simple, compact identifier for foxhunting and...
Topics: radio, amateur, antenna, mhz, packet, output, power, ham, radio today, amateur radio, ham radio,...
73 Magazine (Amateur Radio Today)
texts

eye 7,626

favorite 3

comment 0

73 Magazine May 1976 (#187) The Magnificent Sevens Microhelix ...... Jacoby 16 An All band Inverted Vee ...... WA5FGC 22 Squaring the Conical ...... Staff 24 Secret Antennas for Cliff Dwellers ...... WA6PXY 26 The Novice Inverted Vee ...... W8HXR 30 Closed Loop Antenna Tuning ...... WA5KPG 32 The 75-80m Broadbander ...... K2VGD 34 The Magic of a Matchmaker ...... W1CEJ 38 How to Coax Your Antenna ...... W6AGX 40 40m DXing - City Style ...... K8ANG 42 The Secret 2m Mobile Antenna ...... Staff 44...
Topics: antenna, mhz, frequency, meter, circuit, amateur, output, kit, wire, ttl, open wire, center...
73 Magazine (Amateur Radio Today)
texts

eye 8,231

favorite 0

comment 0

73 Magazine April 1991 (#367) Artificial RF Ground - Maximize your antenna's efficiency ...... KB4ZGC 10 The ESV Mod Quad - Inexpensive performer for any band from 50 through 1296 MHz ...... WB0ESV 14 Collinear for Two Meters - An inexpensive, efficient antenna ...... G3YCC 24 Simple SupeRX - A super-small superhet for 80, 40, or 30m ...... WA6IVC 26 Pocket-Portable Seven-Band Antenna - It's cheap, easy-to-build, and effective ...... KB4ZGC 46 Ten for 10 - Build a high performance, 10 meter...
Topics: antenna, radio, amateur, mhz, ham, repeater, wire, meter, frequency, amateur radio, radio today,...
73 Magazine (Amateur Radio Today)
texts

eye 9,648

favorite 1

comment 0

73 Magazine September 1977 (#204) A FAAR-OUT DXpedition ...... WA6YOB 25 So You Want to Get Into RTTY? ...... W9IF 28 Design An Active RTTY Filter ...... K2OAW 38 Moving Display RTTY Readout ...... WB8SWH 44 RTTY SWling ...... WA2MOT/WT2AAG 52 RTTY Local Loop ...... WB5IRY 59 Try the RTTY Reader ...... W3JJU, Cannon 60 Organize Your RTTY Pix ...... W2PSU 66 Build A RTTY Message Generator ...... WB9CNE 74 FSK for the Drake ...... WB8DMC 78 Baudot to ASCII Converter ...... VE4CM 80 Digital Group...
Topics: rtty, frequency, amateur, mhz, power, kit, antenna, baudot, output, circuit, power supply, amateur...
73 Magazine (Amateur Radio Today)
texts

eye 8,074

favorite 3

comment 0

73 Magazine January 1992 (#376) The Dual-Combo Field-Strength and Source Dip Meter - Versatile test instruments for all your RF projects ...... WB0ESV 8 Safety Power Breaker for the Test Bench - Avoid a shocking experience ...... WA1FHB 18 An Improved Crystal Tester - Check out those surplus crystals with this portable circuit ...... KA4J 22 Build a Function Generator - An inexpensive way to generate useful waveforms ...... KB4ZGC 28 One Desert Storm MARS Experience - MARS readiness and support...
Topics: radio, amateur, mhz, antenna, meter, repeater, frequency, electronics, amateur radio, radio today,...
73 Magazine (Amateur Radio Today)
texts

eye 11,261

favorite 1

comment 0

73 Magazine January 1978 (#208) The Go-first-Class Digital Tester - build this outstanding in-circuit logic monitor ...... W7BBX/4 24 The Unbeatable Base-Loaded Three-Element Rotary Vertical ...... W3KBM 22 Negative Numbers On A $9 Calculator ...... WB6IXT/7 32 Sideband Exposed! -the mysteries of SSB unveiled -why not understand it once and for all? ...... W2FEZ 34 IC Timer Review ...... W3HB 40 Forget Ohm's Law ...... Stanfield 46 Brew Up A Signal Generator ...... Staff 50 Reprogram Your...
Topics: output, frequency, mhz, power, kit, circuit, amateur, radio, receiver, input, power supply, amateur...
73 Magazine (Amateur Radio Today)
texts

eye 12,022

favorite 2

comment 0

73 Magazine November 1984 (#290) Color Computer SSTV: Part I - Turn your CoCo into a complete SSTV terminal How? First, build this high resolution display system ...... K6AEP, WB8DQT 10 Wrap Up TVI! - Can you endure another evening without transmitting? Use this simple cure to choke out television interference forever ...... KR7L 26 But I Know How To Solder! - Anyone can dribble hot metal over a joint, bit it takes an artist to really solder. Are you a Picasso or a pig? ...... WD4S 28 Free-Form...
Topics: amateur, mhz, radio, filter, antenna, frequency, display, magazine, circuit, amateur radio, power...
73 Magazine (Amateur Radio Today)
texts

eye 11,766

favorite 0

comment 0

73 Magazine October 1969 (#109) A Super-Gain Antenna for 40 Meters - Nine db on 40 meters might be called "super" ...... W4NVK 8 DX Corner - WTW reports and other DX jazz ...... K2AGZ 12 FET Chirper - Signal source for peaking converters for optimum signal/noise ...... K6QKL 20 The Inside Info on Alexander Graham - Or how the telephone really works ...... W2FEZ 24 Leaky Lines - Similar to "Grumbles," but by a licensed amateur, not a CB'er ...... K2AGZ 28 Scope Calibrator -...
Topics: signal, frequency, modulation, amateur, arrl, radio, antenna, modulating, power, receiver, amateur...
73 Magazine (Amateur Radio Today)
texts

eye 11,610

favorite 1

comment 0

73 Magazine October 1992 (#385) Packet on the Mac - Connect with the world without a TNC ...... KD6CMT 8 A 2 Meter FET Amplifier for Your Handheld - Build this simple, inexpensive amplifier ...... AA4AW 20 A New Look at Loop Antennas - Adding regeneration to ferrite-core and open-wire box loops ...... W2IMB 28 Baby Loopy - A half-wave, inductively-loaded loop ...... NH6XK 34 Noise Reduction Using Broadband Active Whip Antennas - Clear reception for the VLF/LF bands ...... WD4PLI/6 38 Packet...
Topics: radio, amateur, antenna, mhz, ihe, packet, ham, power, meter, amateur radio, radio today, feedback...
73 Magazine (Amateur Radio Today)
texts

eye 13,008

favorite 1

comment 0

73 Magazine December 1979 (#231) New Product: Swan's Astro 150 SSB Transceiver ...... WB8BTH 32 Low-Cost Receiver for Satellite TV - this modular design uses readily available technology ...... N6TX 38 A Simple 2m/10m Crossband Repeater System - work the world with an HT! ...... K9EID 44 Audio Booster for Mil-Surplus Receivers - a must for headphone haters ...... McClellan 50 Working with FETs - part II : experiments with gain and supply voltage ...... WA2SUT/NNN0ZVB 54 Build this $50...
Topics: mhz, frequency, amateur, antenna, output, circuit, power, audio, radio, amateur radio, power...
73 Magazine (Amateur Radio Today)
texts

eye 6,441

favorite 1

comment 0

73 Magazine June 1988 (#333) Flip-Flop/Latch Circuit - Welcome to digital electronics ...... W4RNL 11 New York City School Program - Carole Perry's kids learning with radio ...... WB2MGP 14 Digital X-Y Oscilloscope - Handy tuning scope project ...... WA9TYU 20 Care and Feeding of PBBS - Etiquette and protocol for packeteers ...... WA1FHB 22 UoSATs Part II - Fascination and fun with these British birds ...... N5AHD 29 Buyer Beware - Sensible advice for buying second-hand gear ...... WD8RCL 32 A...
Topics: radio, amateur, data, digital, mhz, rtty, frequency, ham, signal, amateur radio, ham radio,...
73 Magazine (Amateur Radio Today)
texts

eye 6,423

favorite 1

comment 0

73 Magazine February 1999 (#461) We Must Be Dreaming - A home-brew receiver project! ...... Duncan 10 LM- and BC-221 Frequency Multiplier - Generate detectable signals up to 1000 MHz ...... W6WTU 17 The Ultra-Simple 20 - The simplest solution to any problem is the best ...... G2BZQ 21 The Franklin VFO - A nifty chill-chasing project for the serious home-brewer ...... W4LJD 24 Mods for the OHR 100A - Here's how to make a popular QRP rig even better ...... W4LJD 30 Here Comes the Sun - Part 2:...
Topics: antenna, radio, amateur, frequency, mhz, circuit, kit, audio, receiver, amateur radio, radio today,...
73 Magazine (Amateur Radio Today)
texts

eye 13,716

favorite 0

comment 0

73 Magazine October 1979 (#229) Extremely Low Frequency Radiation: Cause for Worry? - studies on ELF are inconclusive, but the battle is joined ...... WB2NEL 34 An LED Display for the HW-2036 - eliminates unwieldy thumbwheel switches ...... WA4BZP 36 It's a Wattmeter... It's an Swr Bridge.. It's Swattmeter! - a super home-brew project ...... K4LBY 42 The Double-Sawbuck QRM Annihilator - 3-IC circuit yields perfect CW ...... WA5QAP 50 Center Insulator for your Next Antenna - do it yourself with...
Topics: mhz, frequency, antenna, output, power, radio, amateur, audio, meter, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 7,635

favorite 3

comment 0

73 Magazine February 1977 (#197) Give That Professional Look to Your Home Brew Equipment - win prizes ...... McClellan 28 You Already Have an Atomic Frequency Standard - here's how to use it ...... WD8ASL 32 Give The Hamburglar Heart Failure - car alarm system ...... WA5KPG 36 Contest Special Keyer - has short but adequate memory ...... WA2KUO 38 The Chintzy 12 - a junk box wonder ...... W1OOP 40 You Can Sound Better With Speech Pre-emphasis - a simple circuit which will work wonders .........
Topics: amateur, kit, mhz, fcc, antenna, frequency, radio, power, circuit, output, amateur radio, barrel...
73 Magazine (Amateur Radio Today)
texts

eye 6,900

favorite 0

comment 0

73 Magazine April 1975 (#175) Build This $50 HT ...... WA5RON 17 Proof of the Extraterrestrial Repeater ...... WB6IQS 21 Scanning with a Synthesizer ...... WA0AQO 23 Poor Man's BFO ...... WB9BNF 36 The Torrid Toroid ...... Harding 37 Voltmeter Switch Quiz ...... WA0ABI 38 WR3ABC - The Inside Story ...... K3BEQ 42 Eight Function Repeater Controller ...... W3JJU 46 Nicads - A Shocking Expose ...... WB6JPI 51 Preamp for the TR22C ...... WB4SNC 53 Ma Bell vs. Foreign Attachments ...... WB2PAP 56...
Topics: mhz, receiver, antenna, repeater, frequency, power, meter, khz, output, amateur, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 11,697

favorite 3

comment 0

73 Magazine December 1972 (#147) AFSA IV SSTV Analyzer - Also works for RTTY ...... W0LMD 17 Single Conversion 2m FM - No 455 i-f needed - honest! ...... K1CLL 23 Miniature Tone Encoder - Fits inside the mike ...... WA9VGS 29 Tone Burst Decoder - For repeaters and such ...... W3JJU 33 Universal I-F Amplifier - Like for a 2m panoramic receiver ...... DJ1SK 38 Touch-Tone Connections - For repeaters ...... K3DSM 43 Simplest Audio IC Yet - Six parts and a battery! ...... W6YBP 49 Using Varactors -...
Topics: amateur, frequency, mhz, radio, voltage, circuit, repeater, meter, output, tuning, amateur radio,...
73 Magazine (Amateur Radio Today)
texts

eye 7,656

favorite 1

comment 0

73 Magazine October 1988 (#337) Packets Full of Pixels - Digital video is now available to the mortal ham ...... WD8AQX 10 A Trip Through The Microwave Spectrum - The scoop on what goes on between 1-10 GHz ...... KT2B 14 10 GHz Polaplexer - Unique way to go full-duplex on 3 cm ...... WB6IGP 20 VHF/UHF Tape Antenna - Fast n' cheap way to get active on 2 meters and above ...... WB3KCZ 24 Portable Re-entrant Cavity Antenna - This "can-do' whip gives better HT antenna performance ...... W7ACI...
Topics: antenna, amateur, radio, mhz, ham, antennas, power, kenwood, frequency, amateur radio, feedback...
73 Magazine (Amateur Radio Today)
texts

eye 9,112

favorite 1

comment 0

73 Magazine April 1989 (#343) Hamfest Survival Guide - Tips on how to more wisely shop for hamfest gear ...... WB9IVR, AA4QA 20 Stay With the State Of The Art - Keep in the know without blowing your budget ...... W1UO 52 Powerful Crystal Set - Better reception on a classic no-power rig ...... Haas 12 Quick and Easy 2m/440 MHz Antenna - Ideal for your dual-band HT -and costs pennies to build! ...... W3RW, W3LOY 18 How to Feed an Apple to an IBM Monitor - $10 interface for your Apple 11+ and an...
Topics: antenna, radio, amateur, mhz, frequency, meter, antennas, ham, band, amateur radio, feedback card,...
73 Magazine (Amateur Radio Today)
texts

eye 13,227

favorite 2

comment 0

73 Magazine April 1994 (#403) Motorcycle Mobile! - Take ham radio two-wheeling ...... KC6QJB 10 The 40 Meter Full-Wave Horizontal Loop - Take your signal to the treetops ...... NH6XK 14 The Big Kahuna - A 15' high, 160 meter Distributed Capacity Twisted Loop Antenna ...... WA6QBU 20 A Sensitive Bandspread SWL Receiver - Aaah, the nostalgic smell of dust burning off tubes! ...... XE2/KB6EPO 32 A 2 Meter Half-Kilowatt for $1 per Watt - Build this VHF amp using vacuum-tube technology! .........
Topics: radio, antenna, amateur, mhz, power, meter, ham, ihe, antennas, amateur radio, radio today, ham...
73 Magazine (Amateur Radio Today)
texts

eye 16,058

favorite 1

comment 0

73 Magazine August 1982 (#263) Poor Man's Spectrum Analyzer - another 73 breakthrough ...... WB5IPM 10 The AC4YN Story - a Tibetan adventure, circa 1936-1937 ...... G5YN 32 "Smart" Squelch for SSB ...... W9MKV, W9YAN 44 The Ultimate Fuse - ac overload protection ...... W2OLU 52 Multi-Purpose Peak Adapter - don't settle for being average ...... K9EUI 54 The $100 TVRO Receiver - Satellite Central, part VIII ...... Gibson 60 VUM: Volume Units Meter - makes measuring decibels easy .........
Topics: mhz, frequency, amateur, antenna, output, power, radio, voltage, input, meter, amateur radio, power...